Logging enter/exit into/from methods or functions

Just as easy as (and same principle of) Synchronizing in the previous post:

class MyMethodLogger
{
   std::string _methodName;

 public:
   MyMethodLogger(const char *methodName):
     _methodName(methodName)
   {  
       log << "Entering method " << _methodName << std::endl;
   }
   ~MyMethodLogger()
   {  
       log << "Exiting method " << _methodName << std::endl;
   }
};

Very easy to use: just instance a MyMethodLogger as the first instruction in method body:

void method()
{

  MyMethodLogger("method()");
...
}

At the end of the method execution (of after an exception throw) the destructor of MyMethodLogger will trace the exit from the method.